southwest of El Rosario (Cretaceous of Mexico)

Also known as LACM 7256

Where: Baja California del Norte, Mexico (30.1° N, 115.7° W: paleocoordinates 33.4° N, 82.7° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: La Bocana Roja Formation, Santonian (86.3 - 83.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by H. Garbani, J. Loewe in 1971; reposited in the LACM

Primary reference: P. Brodkorb. 1976. Discovery of a Cretaceous bird, apparently ancestral to the orders Coraciiformes and Piciformes (Aves: Carinatae). Smithsonian Contributions to Paleobiology 27:67-73 [J. Hunter/J. Hunter/J. Hunter]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13312: authorized by John Hunter, entered by John Hunter on 20.02.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• based on several fragmentary postcranial bones
Aves
 Alexornithiformes - Alexornithidae
Alexornis antecedens n. gen. n. sp.
Alexornis antecedens n. gen. n. sp. Brodkorb 1976 bird